FPDoc Onlineexperiment

WeekSpan function

In unit DateUtils

Calculate the approximate number of weeks between two TDateTime values.

Declaration

pascal

function WeekSpan(const ANow: TDateTime; const AThen: TDateTime)
: Double

Arguments

`ANow`	First moment in time.
`AThen`	Second moment in time.

Function result

Number (fractions included) of weeks between ANow and AThen.

Description

WeekSpan returns the number of weeks between ANow and AThen, including any fractional parts of a week.

See also

Example: `ex65`

pascal

Program Example57;

{ This program demonstrates the WeekSpan function }

Uses SysUtils,DateUtils;

Procedure Test(ANow,AThen : TDateTime);

begin
 Write('Number of weeks between ');
 Write(DateToStr(AThen),' and ',DateToStr(ANow));
 Writeln(' : ',WeekSpan(ANow,AThen));
end;

Var
  D1,D2 : TDateTime;

Begin
  D1:=Today;
  D2:=Today-7;
  Test(D1,D2);
  D2:=Today-8;
  Test(D1,D2);
  D2:=Today-14;
  Test(D1,D2);
  D2:=Today-35;
  Test(D1,D2);
  D2:=Today-36;
  Test(D1,D2);
  D2:=Today-17;
  Test(D1,D2);
End.

An experiment, built from development snapshots. Not the official Free Pascal or Lazarus documentation.